using System;
using System.Collections.Generic;
using System.Linq;

class Solution
{
    static void Main()
    {
        var vals = Console.ReadLine().Split(' ').Select(int.Parse).ToArray();
        var n = vals[0];
        var m = vals[1];
        var battles = new int[m][];
        for (int i = 0; i < m; i++)
        {
            battles[i] = Console.ReadLine().Split(' ').Select(int.Parse).ToArray();
        }

        // boss -> 構成員
        var team = Enumerable.Range(1, n).ToDictionary(i => i, i => new List<int> { i });
        var idToBoss = Enumerable.Range(1, n).ToDictionary(i => i, i => i);

        foreach (var battle in battles)
        {
            var boss = battle.Select(i => idToBoss[i]).ToArray();
            var win = boss[0];
            var lose = boss[1];

            if (win == lose)
            {
                continue;
            }

            var counts = Enumerable.Range(0, 2).Select(i => team[boss[i]].Count).ToArray();
            if (counts[0] < counts[1])
            {
                win = boss[1];
                lose = boss[0];
            }
            else if (counts[0] == counts[1] && boss[0] > boss[1])
            {
                win = boss[1];
                lose = boss[0];
            }

            foreach (var id in team[lose])
            {
                idToBoss[id] = win;
            }
            team[win].AddRange(team[lose]);
        }

        foreach (var kv in idToBoss)
        {
            Console.WriteLine(kv.Value);
        }
    }
}